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Cytokeration (5/18) Antibody Staining Protocol for Immunohistochemistry
Description: NCL-C50 reacts with human cytokeratin intermediate filament proteins of 58kD and 45kD, identified as cytokeratins 5 and 18, respectively. Cytokeratin 5 is expressed by basal cells and suprabasal cells of stratified epithelium. Cytokeratin 18 is expressed by simple epithelial cells, including ductal and glandular epithelia.
Primary Antibody
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Name: Cytokeratin 5/18 Antibody |
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Clone: C-50, Mouse anti-Human |
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Supplier: Novocastra Labs |
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Catalog Number: NCL-C50 |
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Dilution: 1:50 - 1:100 using IHC-TekTM Antibody Diluent (Cat# IW-1000 or IW-1001) to reduce background and unspecific staining and serum blocking step is NOT needed. |
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Incubation Time/Temp: 60 minutes/room temperature |
Antigen Retrieval
| Device: IHC-TekTM Epitope Retrieval Steamer Set (Cat# IW-1102) |
| Buffer/pH value: IHC-TekTM Epitope Retrieval Solution (Cat# IW-1100) |
| Heat/Cool Temperature: 95-100 ºC/room temperature |
| Heat/Cool Time: 20 minutes/20 minutes |
Detection Methods
| Standard Method: ABC Method or LSAB Method |
| Enhanced Method: Polymeric Methods |
Chromogen Substrate
| Reagent: DAB |
| Incubation Time/Temperature: 1-3 minutes/room temperature |
Counterstain
| Reagent: Mayer's Hematoxylin |
| Staining Time: 30 seconds |
Results:
| Staining Pattern: Cytoplasmic |
| Images: Search image |
Additional Information:
| Tissue Type: Skin |
| Fixation: Formalin fixed paraffin sections, or acetone fixed frozen sections. |
| Positive Control: Skin |
| Negative Control: Omit primary antibody, isotype control or absorption control |
| Blocking: 2-5% normal serum to reduce unspecific background staining; 0.5-3% H2O2 to block endogenous peroxidase activity; avidin/biotin to block endogenous biotin activity if necessary |
Notes:
There is no need to perform antigen retrieval for frozen sections. |
References: